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Anova

An ANOVA test was performed comparing 4 groups of 3 items each. The test results showed a statistically significant difference in the means of the groups with a probability of 0.018. Group A had a mean of 216.67, group B had a mean of 145, group C had a mean of 170, and group D had a mean of 225.

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487 views2 pages

Anova

An ANOVA test was performed comparing 4 groups of 3 items each. The test results showed a statistically significant difference in the means of the groups with a probability of 0.018. Group A had a mean of 216.67, group B had a mean of 145, group C had a mean of 170, and group D had a mean of 225.

Uploaded by

supermanedit
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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ANOVA: Results

The results of a ANOVA statistical test performed at 05:48 on 27-DEC-2015


Source of
Variation

Sum of
Squares

d.f.

between
error
total

1.3075E+04
5717.
1.8792E+04

3
8
11

Mean
Squares

4358.
714.6

6.099

The probability of this result, assuming the null hypothesis, is 0.018


Group A: Number of items= 3
175. 225. 250.
Mean = 216.67
95% confidence interval for Mean: 181.1 thru 252.3
Standard Deviation = 38.2
High = 250.0 Low = 175.0
Median = 225.0
Average Absolute Deviation from Median = 25.0
Group B: Number of items= 3
135. 150. 150.
Mean = 145.00
95% confidence interval for Mean: 109.4 thru 180.6
Standard Deviation = 8.66
High = 150.0 Low = 135.0
Median = 150.0
Average Absolute Deviation from Median = 5.00
Group C: Number of items= 3
150. 160. 200.
Mean = 170.00
95% confidence interval for Mean: 134.4 thru 205.6
Standard Deviation = 26.5
High = 200.0 Low = 150.0
Median = 160.0
Average Absolute Deviation from Median = 16.7

Group D: Number of items= 3


200. 225. 250.
Mean = 225.00
95% confidence interval for Mean: 189.4 thru 260.6
Standard Deviation = 25.0
High = 250.0 Low = 200.0
Median = 225.0
Average Absolute Deviation from Median = 16.7

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